k22k18 Top There are markings, but no certificate of authenticity. Please make your judgment based on the photos. The necklace is a 16-sided triple 30g. This is an offering of the top only. The necklace is for reference. Please be aware that there may be overlooked issues such as scratches, stains, damage, missing parts, dust, mold, discoloration, wear, deterioration, etc. Please check the details in the images and make your judgment. There may be cases where I cannot answer questions. Thank you for your understanding. ★ Used, as-is, no returns or exchanges. Returns and refunds are not accepted to prevent switching. Please purchase only if you agree to the above. Those seeking perfection or who are overly concerned should refrain from purchasing.